# WHATPORT(10012)

## NAME

port 10012 — Unassigned — No IANA registration; a plain unclaimed high port.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA has no assignment for 10012, and Nmap's service database lists it as unknown, open on about 0.04% of scanned hosts. Nothing widely deployed defaults here. A listener is an application, agent, or published container port that took the next free number, so identify it by probing rather than by the number.

## EXPOSURE

**Expose with care.** No registration, no assumed protocol, no assumed authentication. Establish what owns the socket before exposing it.

## CHECK

```sh
sudo lsof -nP -iTCP:10012 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA port registry — 10012 (no assignment)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=10012) (iana.org)
- source — [nmap-services — Nmap's port frequency database](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)

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HTML: <https://whatport.net/10012/> · JSON: <https://whatport.net/10012.json> · full dataset: <https://whatport.net/ports.json>